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A Map of the Travels of George Washington

Map of the travels of George Washington in the Middle Atlantic region of the United States between 1732 and 1799, with insets of New York and the lower Hudson Valley, Mount Vernon, the tidewater region of Virginia, Philadelphia, and Boston. The map includes towns, colonial highways, historic or notable sites, bodies of water, and other geological features, with relief shown in hachures. Scale [ca. 1:2,502,720] (39.5 miles to the inch).
Date: 1931
Creator: National Geographic Society for the National Geographic Magazine
Object Type: Map
System: The Portal to Texas History
Wildlife Conservation Through Erosion Control in the Piedmont (open access)

Wildlife Conservation Through Erosion Control in the Piedmont

"Erosion has left scars on a majority of farms in the Southeast. Too poor to produce crops, the eroding spots are usually abandoned. Unless they are treated to stop further washing of the soil they grow steadily larger and continually rob the farmer of more of his land. Fortunately, soil conservation and wildlife management can be effectively combined, and otherwise worthless areas made to produce a crop of game, fur bearers, and other desirable types of wildlife. The general principles of wildlife management on the farm are described in Farmers' Bulletins 1719 and 1759. The purpose of this bulletin is to show how gullies, terrace outlets, waterways, eroding field borders, pastures, and woodlands in the Piedmont region may be protected against erosion through the use of vegetation that will also provide food and cover for wildlife." -- p. ii
Date: 1937
Creator: Stevens, Ross O.
Object Type: Pamphlet
System: The UNT Digital Library
Soil Defense in the Northeast (open access)

Soil Defense in the Northeast

This bulletin discusses methods of soil conservation in the northeastern United States that can prevent erosion. Soil conservation practices vary with the type of agriculture being used. In addition to general farming, conservation for dairying, orcharding, market gardening, and single-crop farming are discussed.
Date: 1938
Creator: Rule, Glenn K. (Glenn Kenton), 1893-
Object Type: Pamphlet
System: The UNT Digital Library
Microscopic Structure and Concentratability of the Important Iron Ores of the United States (open access)

Microscopic Structure and Concentratability of the Important Iron Ores of the United States

Outline of Problem: "This paper covers a survey of 19 ores collected from seven of the more important iron-ore districts of the United States and is a contribution by the ore-dressing section of the United States Bureau of Mines to general research program on iron and steel being conducted by the Bureau."
Date: 1936
Creator: Cooke, S. R. B.
Object Type: Report
System: The UNT Digital Library